Phase-field modeling of free dendritic growth with adaptive finite element method

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	Phase-field modeling of free dendritic growth with adaptive finite element method
	Y. Chen; X. H. Kang; D. Z. Li
	2009
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	58 期号:1 页码:390-398
摘要	A simple derivation of phase-field model for pure materials based on entropy functional is provided and then solved by adaptive finite element method (AFEM) to simulate the free dendritic growth from undercooled nickel melt. To investigate the evolutions of the dendrite and reproduce the real physical process, the modeling is performed in a larger domain and thinner interface with the highly computationally efficient and accurate AFEM. The simulated results show that the secondary arms grow in an unsymmetrical mode and their development is controlled by the thermal diffusion and affected by noises which are arbitrarily introduced in the phase-field governing equation. As the latent heat released during the migration of solid-liquid interface is accumulated sufficiently,it prompted initiation of other secondary arms at the same side of the primary arm. As the computation proceeds, the secondary arms become coarsened apparently through four different modes.
部门归属	[chen yun; kang xiu-hong; li dian-zhong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;chen, y (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;dzli@imr.ac.cn
关键词	Free Dendritic Growth Phase-field Adaptive Finite Element Method Binary Alloy Efficient Computation Solidification Simulation Microstructures
URL	查看原文
WOS记录号	WOS:000262834300060
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31836
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Chen,X. H. Kang,D. Z. Li. Phase-field modeling of free dendritic growth with adaptive finite element method[J]. Acta Physica Sinica,2009,58(1):390-398.
APA	Y. Chen,X. H. Kang,&D. Z. Li.(2009).Phase-field modeling of free dendritic growth with adaptive finite element method.Acta Physica Sinica,58(1),390-398.
MLA	Y. Chen,et al."Phase-field modeling of free dendritic growth with adaptive finite element method".Acta Physica Sinica 58.1(2009):390-398.